Plastic Dissipation Energy in Mixed-Mode Fatigue Crack Growth on Ductile Bimaterial Interfaces

 
 
 
 

Plastic Dissipation Energy in Mixed-Mode Fatigue Crack Growth on Ductile Bimaterial Interfaces

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dc.contributor.advisor Klingbeil, Nathan W. en_US
dc.contributor.author Daily, Jeremy S. en_US
dc.date.accessioned 2008-07-11T14:57:43Z
dc.date.available 2008-07-11T14:57:43Z
dc.date.created 2003 en_US
dc.date.issued 2008-07-11T14:57:43Z
dc.identifier.uri http://rave.ohiolink.edu/etdc/view?acc_num=wright1074880923 en_US
dc.identifier.uri http://hdl.handle.net/2374.OX/19709
dc.description Daily, Jeremy S., M.S. Egr., Department of Mechanical and Materials Engineering, Wright State University, 2003. Plastic Dissipation Energy in Mixed-Mode Fatigue Crack Growth on Ductile Bimaterial Interfaces. A new theory of fatigue crack growth in ductile solids has recently been proposed based on the total plastic energy dissipation per cycle ahead of the crack. This and previous energy-based approaches in the literature suggest that the total plastic dissipation per cycle can be closely correlated with fatigue crack growth rates under Mode I loading. The goal of the current study is to extend the dissipated energy approach to steady-state crack growth under mixed-mode loading conditions, with application to cyclic delamination of ductile interfaces in layered materials. The total plastic dissipation per cycle is obtained by 2-D elastic-plastic finite element analysis of a stationary crack in a general mixed-mode specimen geometry under constant amplitude loading. Both elastic-perfectly plastic and bi-linear kinematic hardening constitutive behaviors are considered, and numerical results for a dimensionless plastic dissipation per cycle are presented over the full range of relevant mechanical properties and mixed-mode loading conditions. In addition, numerical results are presented for the case of fatigue crack growth along a bonded interface between materials with identical elastic, yet dissimilar plastic properties, including mismatches in both kinematic hardening modulus and yield strength. Finally, the approach is generalized to include mismatches in both elastic and plastic properties, and results for the dimensionless plastic dissipation per cycle are reported over the complete design space of bimaterial interfaces. The results of this thesis are of interest in soldering, welding, coating, electronic packaging, and a variety of layered manufacturing applications, where mismatches in both elastic and plastic properties can exist between the deposited material and the substrate. en_US
dc.format application/pdf en_US
dc.format 169p. en_US
dc.rights unrestricted en_US
dc.rights Copyright and permissions information available at the source archive en_US
dc.subject Fatigue crack growth, energy methods, finite elements, fracture mechanics, bimaterials, mixed-mode. en_US
dc.title Plastic Dissipation Energy in Mixed-Mode Fatigue Crack Growth on Ductile Bimaterial Interfaces en_US
dc.type Electronic Thesis or Dissertation en_US
dc.degree.name MS en_US
dc.degree.level masters en_US
dc.degree.discipline Mechanical Engineering en_US
dc.degree.grantor Wright State University en_US
dc.contributor.publisher Wright State University / OhioLINK en_US

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